EP1128705A3 - Speaker - Google Patents

Speaker Download PDF

Info

Publication number
EP1128705A3
EP1128705A3 EP01301583A EP01301583A EP1128705A3 EP 1128705 A3 EP1128705 A3 EP 1128705A3 EP 01301583 A EP01301583 A EP 01301583A EP 01301583 A EP01301583 A EP 01301583A EP 1128705 A3 EP1128705 A3 EP 1128705A3
Authority
EP
European Patent Office
Prior art keywords
voice coil
end portion
diaphragm
usual
prevented
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01301583A
Other languages
German (de)
French (fr)
Other versions
EP1128705B1 (en
EP1128705A2 (en
Inventor
Shigeru Sugiyama
Naohiro Fujinama
Hajime Kitamura
Yoshio Imahori
Hitoshi Yamashima
Masami Kushida
Hisashi Kubota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Star Micronics Co Ltd
Original Assignee
Star Micronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2000050197A external-priority patent/JP4261721B2/en
Priority claimed from JP2000050198A external-priority patent/JP3619736B2/en
Application filed by Star Micronics Co Ltd filed Critical Star Micronics Co Ltd
Publication of EP1128705A2 publication Critical patent/EP1128705A2/en
Publication of EP1128705A3 publication Critical patent/EP1128705A3/en
Application granted granted Critical
Publication of EP1128705B1 publication Critical patent/EP1128705B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil

Abstract

By forming a flange portion 16a1 protruding inward in the radial direction at an upper end portion 16a of a voice coil 16, a coiling sectional shape of the voice coil 16 is set to a L-shape. And, the upper end portion 16a of this voice coil 16 is bonded and fixed to a central flat portion 12b of a diaphragm 12. Hereby, by only increasing slightly the weight of the usual voice coil having an I-shaped coiling section, the large bonding area can be obtained between the voice coil 16 and the diaphragm 12, so that separation of the voice coil 16 can be prevented. Further, since other portions of the voice coil 16 than the upper end portion 16a thereof have the usual coil thickness, it is not necessary to expand the width of a cylindrical magnetic gap G in a magnetic circuit unit 18, whereby it is prevented that electroacoustic conversion efficiency of a speaker 10 lowers.
EP20010301583 2000-02-25 2001-02-22 Speaker Expired - Lifetime EP1128705B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2000050197A JP4261721B2 (en) 2000-02-25 2000-02-25 Speaker
JP2000050198A JP3619736B2 (en) 2000-02-25 2000-02-25 Speaker
JP2000050198 2000-02-25
JP2000050197 2000-02-25

Publications (3)

Publication Number Publication Date
EP1128705A2 EP1128705A2 (en) 2001-08-29
EP1128705A3 true EP1128705A3 (en) 2003-01-02
EP1128705B1 EP1128705B1 (en) 2009-05-06

Family

ID=26586159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010301583 Expired - Lifetime EP1128705B1 (en) 2000-02-25 2001-02-22 Speaker

Country Status (3)

Country Link
EP (1) EP1128705B1 (en)
CN (1) CN1199519C (en)
DE (1) DE60138583D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1662838B1 (en) * 2003-08-19 2008-05-07 Matsushita Electric Industrial Co., Ltd. Loudspeaker
EP2007169A3 (en) 2007-06-20 2009-12-09 Sonion Horsens A/S Miniature voice coil with integrated coupling coil
KR101483089B1 (en) * 2013-04-24 2015-01-19 주식회사 이엠텍 Suspension for sound transducer
US9154864B1 (en) * 2014-04-30 2015-10-06 Harman International Industries, Inc. Speaker assembly
CN107172547B (en) * 2017-05-26 2020-05-08 歌尔股份有限公司 Voice coil winding method, vibration assembly and sounder with vibration assembly
US10911875B2 (en) * 2018-08-30 2021-02-02 Apple Inc. Electro-acoustic transducer diaphragm with integrated structural features, and related systems and methods
CN110830890B (en) * 2019-11-11 2021-12-28 歌尔股份有限公司 Voice coil assembly and loudspeaker

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962012A (en) * 1932-04-09 1934-06-05 Grassmann Peter Electrodynamic loud speaker
US4118605A (en) * 1977-01-19 1978-10-03 Sansui Electric Co., Ltd. Coil mount structure
GB2055014A (en) * 1979-06-30 1981-02-18 Pioneer Electronic Corp Voice coil assembly for a loudspeaker employing a square planar diaphragm
JPS56126399A (en) * 1980-03-10 1981-10-03 Mitsubishi Electric Corp Attaching structure of voice coil for flat plate type speaker
JPS57148498A (en) * 1981-03-09 1982-09-13 Seiko Instr & Electronics Ltd Dynamic speaker
JPH01215200A (en) * 1988-02-23 1989-08-29 Mitsubishi Electric Corp Speaker
US5699439A (en) * 1994-06-01 1997-12-16 Nokia Technology Gmbh Loudspeakers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962012A (en) * 1932-04-09 1934-06-05 Grassmann Peter Electrodynamic loud speaker
US4118605A (en) * 1977-01-19 1978-10-03 Sansui Electric Co., Ltd. Coil mount structure
GB2055014A (en) * 1979-06-30 1981-02-18 Pioneer Electronic Corp Voice coil assembly for a loudspeaker employing a square planar diaphragm
JPS56126399A (en) * 1980-03-10 1981-10-03 Mitsubishi Electric Corp Attaching structure of voice coil for flat plate type speaker
JPS57148498A (en) * 1981-03-09 1982-09-13 Seiko Instr & Electronics Ltd Dynamic speaker
JPH01215200A (en) * 1988-02-23 1989-08-29 Mitsubishi Electric Corp Speaker
US5699439A (en) * 1994-06-01 1997-12-16 Nokia Technology Gmbh Loudspeakers

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 006 (E - 089) 14 January 1982 (1982-01-14) *
PATENT ABSTRACTS OF JAPAN vol. 006, no. 251 (E - 147) 10 December 1982 (1982-12-10) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 531 (E - 851) 28 November 1989 (1989-11-28) *

Also Published As

Publication number Publication date
EP1128705B1 (en) 2009-05-06
CN1310576A (en) 2001-08-29
DE60138583D1 (en) 2009-06-18
CN1199519C (en) 2005-04-27
EP1128705A2 (en) 2001-08-29

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